Ultralow-temperature metal passivation phosphorizing liquid and preparation method thereof
A kind of technology of metal passivation and phosphating solution
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Embodiment 1
[0017] An ultra-low temperature metal passivation phosphating solution, the components and the mass concentration of each component are as follows: phosphoric acid 100g / L, tartaric acid 2g / L, sodium chlorate 2g / L, sodium dihydrogen phosphate 3g / L, fluotitanic acid 6g / L L, ammonium citrate 8g / L, triethanolamine 6g / L, tannic acid 2g / L, sodium molybdate 3g / L, water-based polyurethane 8g / L, m-xylylenediamine 5g / L.
[0018] Weigh phosphoric acid, tartaric acid, sodium chlorate, dihydrogen phosphate, fluotitanic acid, ammonium citrate, triethanolamine, molybdate, water-based polyurethane and m-xylylenediamine according to the mass concentration, mix well, add water to 1L, Raise the temperature to 60°C and stir for 40 minutes, then add a surfactant and stir to obtain an ultra-low temperature metal passivation phosphating solution.
Embodiment 2
[0020] An ultra-low temperature metal passivation phosphating solution, the components and the mass concentration of each component are as follows: phosphoric acid 300g / L, tartaric acid 18g / L, sodium chlorate 10g / L, zinc dihydrogen phosphate 10g / L, fluotitanic acid 1g / L L, ammonium citrate 2g / L, triethanolamine 1g / L, dodecyltrimethylammonium bromide 10g / L, ammonium molybdate 12g / L, water-based polyurethane 8g / L, m-xylylenediamine 2g / L .
[0021] Weigh phosphoric acid, tartaric acid, sodium chlorate, dihydrogen phosphate, fluotitanic acid, ammonium citrate, triethanolamine, molybdate, water-based polyurethane and m-xylylenediamine according to the mass concentration, mix well, add water to 1L, Raise the temperature to 60°C and stir for 40 minutes, then add a surfactant and stir to obtain an ultra-low temperature metal passivation phosphating solution.
Embodiment 3
[0023] An ultra-low temperature metal passivation phosphating solution, the components and the mass concentrations of each component are as follows: phosphoric acid 150g / L, tartaric acid 6g / L, sodium chlorate 4g / L, sodium dihydrogen phosphate 8g / L, fluotitanic acid 5g / L L, ammonium citrate 6g / L, triethanolamine 2g / L, dodecyltrimethylammonium bromide 4g / L, sodium molybdate 5g / L, water-based polyurethane 18g / L, m-xylylenediamine 3g / L .
[0024] Weigh phosphoric acid, tartaric acid, sodium chlorate, dihydrogen phosphate, fluotitanic acid, ammonium citrate, triethanolamine, molybdate, water-based polyurethane and m-xylylenediamine according to the mass concentration, mix well, add water to 1L, Raise the temperature to 60°C and stir for 40 minutes, then add a surfactant and stir to obtain an ultra-low temperature metal passivation phosphating solution.
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